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-R:142 395 STANDARDIZATION PLAN FOR FIBER OPTICS OPTIONAL PHASE i/i VOLUME i(U) INFORMATION GATEKEEPERS INC BOSTON MA i984 I F@4606-82-C-i585 UNCLASSIFIED F/ 21 NL
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Page 1: -R:142 VOLUME FOR FIBER UNCLASSIFIED · Fiber Optic Systems, Standards and Specifications, Commercially Available Fiber Optic Components and Fiber Optic Components Presently Used

-R:142 395 STANDARDIZATION PLAN FOR FIBER OPTICS OPTIONAL PHASE i/i

VOLUME i(U) INFORMATION GATEKEEPERS INC BOSTON MA i984I F@4606-82-C-i585

UNCLASSIFIED F/ 21 NL

Page 2: -R:142 VOLUME FOR FIBER UNCLASSIFIED · Fiber Optic Systems, Standards and Specifications, Commercially Available Fiber Optic Components and Fiber Optic Components Presently Used

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Page 3: -R:142 VOLUME FOR FIBER UNCLASSIFIED · Fiber Optic Systems, Standards and Specifications, Commercially Available Fiber Optic Components and Fiber Optic Components Presently Used

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FINAL REPORT.

Standardization Plan for Fiber Optics

Optional Phase

1, VOLUME I

submitted under Air Force Contract F04606-82-C-1505

to

Sacramento ALC/PM

McClellan Air Force Base

By

J

Information Gatekeepers, Inc.

138 Brighton Avenue

Boston, Massachusetts 02134

.-"*"'... (617) 787-1776 ,984 '

and

Aetna Telecommunications Consultants

889 West Main Street

Centerville, Massachusetts 02632I._L.I (617) 778-1442

S.5...

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INTRODUCTION

The second phase of the program to develop a "Standardization Plan

for Fiber Optics' as per SM/ALC statement of work MMIRE 82-45 dated June

24, 1984 was to implement the recommendations of the first phase (seefirst phase final report). Despite the complexity of the task which wasunforeseen at the start of the program, the contractor applied a greater

amount of effort than was required. However, due to the rapid changingfiber optic technology and the ever increasing number of systems, the

complete needs of SM/ALC many not be met for at least several years. Inorder for SM/ALC to effectively carry out its stocklisting activitieswithout the threat of proliferation, fiber optic technology muststabilize. This is not to say that interim standards for fiber opticsshould not be pursued or that fiber optics components should not beIinventoried. Rather, it does mean that extreme caution must be exercised

in the development of such documents and selection of components for the

inventory. . jSpecifically, the optional phase of the statement of work required:

1. Gathering of technical data necessary to prepare limited

coordination (USAF) standards in accordance with the Defense

Standardization manual DOD 4120.3-M, Chapter III, Section 6. 12. Selection of Fiber Optics stems for Air Force Inventory.

3. The preparation of the limited coordination standardization

documents.

The majority of this study was spent on Items 1 and 2. Item 1* formed the basis for the selection of the fiber optics items in Item 2

and was by far the most difficult to accomplish. Efforts in

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Item 1 also showed the need for limited coordination standards. It has

been shown in this study that the data base will take several years to

complete and hence only limited recommendation on items for the inventory

can be made until more in depth data is available. Similarly, limited

coordination documents are being prepared by organizations such as DESC

and EIA. It is recommended on an interim basis that the DESC documents

be used.

Results of this phase were originally to be delivered in hard copy

form. However, a decision was made to deliver the resultant data base in

machine readable form as specified by SM/ALC. As per this requirement,

tapes were delivered to SM/ALC containing the following data bases:

Fiber Optic Systems, Standards and Specifications, Commercially Available

Fiber Optic Components and Fiber Optic Components Presently Used in

Military Systems. Examples of these data bases are included as

appendices to this report.

Although this hard copy report is not required, it has been

presented as a vehicle to describe the data bases, and to review our

summary and conclusions, recommendations, and potential future directions

of work that is still needed.

APPROACH

Since the data collection was the most important part of this

portion of the study, considerable time and effort was spent on

developing a methodology that could obtain the maximum results. Figure 1

shows the model used. Even before initial telephone contacts could be

made, a base of contacts- was developed for systems, standards, and

commercially available components. On the average, several iterations of

contacts were required before usable data was obtained. Even though a

systematic approach was taken, the results turned out not to be as

complete as wished for. Nevertheless, the experience has shown the

difficulty in obtaining this type of information.

b •~

.A * * . *.. . . ...

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FIBER OPTIC SYSTEMS DATABASE

Our data collection and analysis activities to date have identified172 systems that utilize fiber optic components in some capacity. A

4. complete listing of these systems has already been provided in a machinereadable form per SM/ALCs specifications. Sample pages of this database

have been repeated in Appendix 1 for your reference. This databaseidentifies the responsible management organization, the current status,

and the existing or planned amount of systems. Also identified as partof this database is the appropriate military and contractor system

contacts. These individuals names should prove most helpful shouldSM/ALC wish to do further research on a particular system. During thedata gathering, the majority of these contacts reacted favorably to theinitial collection of this data and to the potential of periodic updates.

As was explained in the final oral briefing, a major portion of thelisted systems are development or experimental in nature and should notplay an important role in SM/ALC's initial stocklisting efforts.

However, these should continue to be tracked because of their potentiallong term effects. A complete alphabetical listing of the 172 systemsidentified thus far is included in Appendix 2. In addition to these

systems, Appendix 3 lists most of the major Air Force and DOD fiber opticresearch and development programs. Collectively the infiltration ofnonstandard components entering the Air Force fiber optic parts inventoryfromn these systems could be overwhelming. It is this potential of

uncontrolled proliferation that further emphasizes the need for immediateaction to hold this process in check.

The immediate needs of SM/ALC are concentrated on identifying major

components thrusts and development trends that will have significantimpact on selecting the components to be stocklisted and eventually

stock piled by the USAF. An initial step in this process was to identify

present and future Air Force programs that will use a significant amount

of fiber optic components. The analyses were concentrated on these

40

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*-programs because of their immediate impact on stockl isting and

procurement efforts. In addition, were examined fiber optic systems used

* - and being developed by other services and government agencies in order toidentify similar applications. For each of the systems analyzed, the

operation and performance specifications of the fiber optic componentswere reviewed to determine how they might apply to the SM/ALC effort.

References to these Tni service and government programs were kept to aminimum and were based on their importance to the stocklisting,

stockpiling and procurement needs of SM/ALC. Typically these were

limited to major programs that have undergone extensive development

efforts.

The conclusions and reconmmendations as summarized later in thiswritten report are drawn from the entire data collection and analysis

efforts. However, as mentioned above, our focus has been narrowed tothose systems which will represent the most immediate impact. This list

is shown in Figure 2. These systems are representative of the currentmajor application categories. Most of the major trends that will effect

* SM/ALC have been identified by examining this list.

--.

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AIR FORCE

GROUND TACTICAL FIXED BASE COMMUNICATIONS SYSTEMS AIRBORNE

A - AN/GRC-206 AN/TPN-19

TACTICAL GENERAL CABLE AN/GYQ-21 (4)

TACS OASIS

MFOX VANDENBURG FIBER OPTIC TRANSMISSION

FLEXIBLE INTERCONNECT SYSTEM

ASOC

BETA

AN/MPN-XX

AN/TPS-43

" TAOC-85 (MCE)

ARMY

GROUND TACTICAL FIXED BASE COMMUNICATIONS SYSTEMS AIRBORNE

i FOTS (LH)

,, V

NAVY

GROUND TACTICAL FIXED BASE COMMUNICATIONS SYSTEMS AIRBORNE

AN/FAC-2A AV8-B

JOINT SERVICE PROGRAMS

- GROUND TACTICAL FIXED BASE COMMUNICATIONS SYSTEMS AIRBORNE

GLCM

AN/TTC-39

LDFOCS

FIGURE 2

J°°--

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Research and Development Data Base

bData has been collected from a number of different sources onresearch and development activities throughout DOD. This data is

difficult to characterize so that it cannot be put easily into electronic

form. The difficulty arises from the fact that it is interrelated bothfrom a program and time standpoint. In this report is included a large

amount of data both in tabular and graphical form. A determination must

be maae by SM/ALC as to the best format required.

The conclusions to be drawn and the relationship of the Research and

Design progi"ams to inventory decisions are not clear at this time exceptto show major trends that the logistician needs to keep in mind. As the

data base is refined, the relationship between Research and Design and

actual systems in the inventory will become more clear.

The data collected is included in Appendix 3.

"-2"-

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7.q7

FIBER OPTIC SPECIFICATIONS AND STANDARDS DATABASE

Insight to the type of components that are used, where and in whatquantity are not enough for SM/ALC to complete its task of identifyingthose components to be stocklisted by the United States Air Force.Understanding and knowledge of what specifications have been prepared,and what standards (military and commercial) have been developed is alsoof prime consideration. In order to prevent the proliferation of

components, the Air Force must utilize a common set of standard orspecification documents when procuring these items. Ideally, these

documents should be adopted from those that currently exist. Asidentified in our interim report, our standard and specification document

data collection was concentrated on providing SM/ALC with documents thatmay apply to various fiber optic components. Optimally, each should

completely identify the desired components design and performance

characteristics. Parameters for each of the following characteristics

should be identified:

- Optical

- Mechanical

- Environmental

- Electrical (if applicable)

In the pursuit of attaining these optimal specification documents,both military and industrial sources were searched. A i st of some ofthe organizations contacted is shown in Figures 3A & 3B. A machinereadable tape (per SM/ALC's specifications) sunmmarizing these efforts hasbeen delivered prior to this report. (A hard copy also has been included

for reference in Appendix 4.) Overall system specification documentscontaining various fiber optic component data have also been reviewed.This process has identified those components being used for particularoperational and environmental applications. Additionally reviewed were

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77

STANDARD ORGANIZATIONS CONTACTED

WORKING GROUP ORAGENCY NAME OF CONTACT SUBCOMMITTEE STATUS

DESC Steven Searcy Fiber Optics Completed specifications on multi-DESC/EMD port couplers, splices, sources,

detectors, bulkhead penetrator,cable/harness assembly expectedduring first quarter of 1984.Mil-C-1200 is under revision inorder to incorporate connectorpackaging. Draft specifications on

S- SMA style connectors,multipinconnectors (Hughes), repeaterdevices and various tools expectedduring first quarter of 1985.

EIA Joseph R. Neigh EIA-P6 Listing of existing and underAMP, Inc. development specifications has

been presented in standardsdatabase. P6 group most activein standards development. EIA iscurrently writing specificationsaccording to the InternationalElectrotechnical Commission (IEC).

H. N. Dorris EIA TR-44 Optical Communications Systems(Chairman) Committee. Deals with technicalAT&T Information considerations of lightwaveSystems communications systems.

O.M.M. Mitchel EIA-TR-44.1 Optical fiber telecommunicationsAT&T Information systems subcommittee. "General

Specification for Digital OpticalFiber Telecommunications Systems"draft 6/83. Single mode systemswork is being initiated.

H. N. Dorris EIA-TR-44.2 Fiber optic Local Area Networksubcommittee considering fiber opticarchitectures and component uses.Interface and interchange circuitparameters have assigned to a taskgroup. A LAN bibliography of inter-face standards for on premise fiberoptic and hybrid networks will bedeveloped. These specifications

- will deal specifically with fiberoptic issues.

W. L. Schumacher EIA-TR-44.4 Fiber optic system terms and docu-AMP, Inc. mentation control subcommittee.

No progress as yet.

FIGURE 3A

•° .° .

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STANDARD ORGANIZATIONS CONTACTED

WORKING GROUP ORAGENCY NAME OF CONTACT SUBCOMMITTEE STATUS

R. F. Hazel EIA-TR-44.5 Industrial liaison for militaryITT optical fiber systems.

EIA Walker JC-13 Government liaison group for solidJEDC Sperry Corp state products. Basic related

documents are Mil-Std-38510;micro circuits.

ANSI Russel Bodoff ANSI/ECSB Meeting held December 14, 1983 toDir. of Develop. decide on areas in which to con-American National centrate. In order to eliminate aStandards Institute duplication of effort ANSI has pro-

posed that a fiber opti-coordinating committeeestablished under the ;IElectrical and Electrc ,; StandardsBoard (EESB).

SAE Charles Husbands SAE-AE9C Has proposed adopting -Std-1773.Mitre Corp Document being discussed with Tri

Service multiplex committee.

Victor Saucedo SAE-AE-8D Currently working on test require-ments for fiber optic wiring instal-lation techniques. It is expectedthat wire installation of militaryvehicles will be addressed soon.

IEEE C. Kleecamp 802.8 Fiber optics technical advisoryMitre Corp group is investigating ways that the

various 802 working group effortscan be transferred to the use offiber optics.

CCITT L. C. Baehler Study Group VI Current responsibilities are for:AT&T Communications conductor insulation requirements,

sheaths, protective coverings,placing and installation techniques,corrosion protection. Handbooksare in process of being published onvarious subjects.

NATO Fiber optic working groupAC301/SGI/STG7 preparing alliedstandards publications

CCITT G. Bonaventura Study Group XV Transmission systems, digitalsystems working party. Severalreports being prepared at workingparty and special rapporteur grouplevel. Specific questions andissues regarding fiber optics arebeing addressed.

FIGURE 3B

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fully de'v uped and in progress Department of Defense specifications,

military standards, system statements of work and procurement documents

in an effort to form a concensus of specifications used. Those pertinent

to a specific Federal stock class or a fiber optic system have been

included in the database.

In following our earlier discussed methodology, the specifications

-- were reviewed for their direct application to each of the Federal Stock

Classes. As was the case with Air Force fiber optic systems, efforts

were concentrated on those available specifications that addressed the

immediate needs of SM/ALC. Dividing these by their application to each

of the federal stock classes enabled developing technology and purchasing

trends to be identified. The resultant list created by this review is

included in Appendix 5. It is our recommendation that SM/ALC obtain

copies of the identified documents for future reference. The results of

the analysis of this list will be discussed later in the recommendations

section of this Report.

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FIBER OPTIC COMPONENTS CURRENTLY BEING USED IN MILITARY SYSTEMS

An area of considerable importance to SM/ALC's efforts was theidentification of fiber optic components presently being specified and

used. The non existence of a central depository of component informationhampered data collection in this area. As presented to SM/ALC orally,

the efforts entailed several telephone conversations, and written

correspondence followed up by one, and in some cases, two visits with keyindividuals. Organizations that represent the major sources of data arelisted in Figure 4. A large portion of the difficulty in gathering this

data was locating the correct individuals. These most often were the SPO

or the project manager who held the largest depository of information*regarding any one system. In some cases it was necessary to locate

additionally a specific engineering group that could provide the

component data required. As a result, a quick reference military fiberoptic contact list was organized. A copy of this list has been included

in Appendix 6.

The existing stocklists of the Defense Electronics Supply Center

(DESC) were researched for applicable fiber optic component date. This

list, admiitted by DESC, represents only a portion of what fiber opticcomponents are actually used in the military. Therefore, this was used

as a starting point and acted as a complementary source to the personalvisits and questionnaire distribution. A completed list of these fiber

optic components has been assembled and forwarded to SM/ALC in a machinereadable format (per SM/ALC's specification). The completed overall list

and a sample of what components are used in a specific system is includedin Appendices 7A & B. Where available, and possible, each component's

commercial and military part number has been listed. Also identified in

this component listing is the manufacturer and specifications currently

met.

In following the theme of identifying acceptable components and

* applicable specification documentation, the listing submitted to SM/ALC

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AGENCIES FROM WHICH DATA WAS COLLECTED

AIR FORCE

AFCC MITREHQ AFLC HQ USAFAFWL AF AVIONICS LABASD RADCEGLIN, AFB SM-ALCESD SACAF FLIGHT DYNAMICS LAB WR-ALC

ARMY

CECOM AVARADCOM TRI-TACARMY COMM. COMMAND DARCOM

U. S. MARINES

C3 DIVISION DEVELOPMENT CENTER

NAVY

NAC NAVAL ELECTRONICS SYSTEMSSYSTEMS CENTER

NAVELEX NAVAL ELECTRONICS SYSTEMS COMMANDNOSC NAVSEANRL NAVAL SURFACE WEAPONS CENTERNAVAIR NAVAL SHIP R&D CENTERNAVAL ELECTRONICS SYSTEMS DIVISION

DOD AGENCIES

DCADESC

OTHER GOVERNMENT AGENCIES

FAA NASANBS INSTITUTE FOR TELECOMMUNICATION

j SCIENCE

SYSTEM VENDORS AND CONTRACTORS

FIGURE 4

I!I" . .. . . . . .. .. .. . . . . . . . . .- .- . .. - . . . . . . . . .. . .. - . , . -. .. . . .-. - . , . -,.-I

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. _ . . . .o . - _.L _ , . P - . . . ,. .p .

(Appendix 7) was categorized by federal stock class. The resultant stock

class lists contain only those components used in Air Force systems.

These lists have been organized as performance charts (Appendix 8) so

that adoption and usage criteria can be drawn for certain families of

components. These charts indicate the stated performance specifications

of the various commercially available products currently being used in

military systems. (Data on specifically developed military programs that

are confidential was not available.) This data has been drawn both from

available product data sheets and manufacturer interviews.

".

IZ

.4 o,

4 Iq

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Commercially Available Products

Data obtained on commercially available products was received from

manufacturers principally by mail. A detailed questionnaire was

generated and mailed by Information Gatekeepers, Inc. to various fiber

optics manufacturers. It was requested that they provide information on

their products, and to make special note of any components used in

military systems or to meet military specifications. The majority of

manufacturers do not produce for the military market, so a select number

'- of products was sent to the SM/ALC. These included those respondents

claiming to have developed military qualified fiber optics products and

those firms having components already in use in military systems. An

example of the type of data in the SM/ALC data base on commercially

available components is shown in Appendix 10.

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A:22

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S .7

0"- °.

DATA ANALYSIS METHODOLOGY

The standardization and stocklisting plan developed during the first

phase of this contract outlined the methodology to be used in making

" fiber optic item and specification recommendations. A flow graph

depicting the data collection and analysis methodology used has been

repeated in Figure 5. As pointed out in previous reports, technical data

concerning various fiber optic systems would be used to compleinent

established recommendation procedures. Several other key factors

! concerning the fiber optic industry have also been taken into

consideration.

a. Developments in fiber optic technology are occurring on the

average of every six months. What is considered state of the

art today may well be obsolete tomorrow.

b. Procedures for maintenance and repair of fiber optic items will

change as the technology develops.

c. Decisions concerning the volume and types of components to

stock list will require careful scrutiny because of the rapidly

advancing technology.

.'S .

-5_-,

. 5. °

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ITEM DATA COLLECTION

CURRENTLY AVAILABLE IN DEVELOPMENT INDUSTRY FORECASTS& BACKGROUND

FIBER OPTIC VENDOR COMMERCIAL F.O. MILITARY INFORMATIONPRODUCT LITERATURE DEVELOPMENT RESEARCH GATEKEEPERS

PROGRAMS LAB RESULTS CURRENT DATA BASE

KEY INDUSTRYTCNLG FIBER OPTIC TECHNICAL FIBER

LEPRSENATI ES FORECASTS RESEARCH PAPERS OPTIC NEWSLETTERS

DISCUSS F.D. APPLICAT1ON RESE-RCHWITH VENDOR ENGINEERS PUBLICATIONS I

EXAMINE DEMONSTRATIONAND INSTALLATION

PERFORMANCE REPORTS

V. L.I

ANALYZE AND SORT FIBER OPTIC COMPONENT TECHNICAL DATA &SORT ACCORDING TO ITEMS ON FEDERAL STOCK GROUP 60

-SC 6010 FSC 6015 FSC 6020 FSC 6030 FSC 6060

Multi Fiber Multi Fiber Mult Fiber . Light Sources Couplers& && . Light Detectors &

Single Fiber Single Fiber Single Fiber . Transmitters Connectorw

Cable Cable Assys . Receivers. Multiplexers

FGR5

• ; -. .FIGURE 5

'*5 ..- ,,,S -

.. 5.. .S..'.*. *|. "..... 5 .-- S---,°~5 ..

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d. Preparation of component evaluation data will be required to

perform qualification testing, since standard test and

measurement techniques have not been formalized.

Analysis of the currently used item list in Appendix 7, has providedinsight to the specific applications of several different components.

Further research has resulted in the component performance specification

charts (Appendix 8) described earlier. Identified are some of the

operational characteristics of these components. Also noted are whether

those components were specially manufactured or are no longer available.

The information was obtained from applicable manufacturers' data sheets

and through interviews with manufacturers' representatives. Categorizing

these charts by Federal stock class, has enabled frequently used types of

components to be identified. The Hughes Connector family has obvious

widespread usage in many tactical and base communication systems. Due to

its construction it seems well qualified for ruggedized applications.

Many of the systems listed as using the Hughes Connector had originally

specified a connector with such qualities. Another frequently used item

that can be easily identified is the widespread usage of 50/125 fiber incommunications cable and the tendency of procuring transmitter and

receiver packages rather than single source and detector devices.

Although some of these devices are currently used in Air Force systems

the question of whether these items should be stocklisted and/or

stockpiled remains.

I

.

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STOCKLISTING AND STANDARDIZATION RECOMMENDATIONS

The potential growth of fiber optic applications in Air Force

systems is overwhelming. The advantages of fiber optics are beginning to

be applied in new areas almost daily; hence the initiation of SM/ALC's

efforts to limit the potential proliferation of fiber optic items was

well timed. Several large research and development programs are

beginning to mature into the production stage and many more are expected

to follow. However, because the technology is advancing so rapidly, the

selection of which components to stocklist must be done so cautiously.

SM/ALC should also be aware that those fiber optic systems that are

already installed were designed over a period of years and hence may be

using out of date components. Our recommendations for the actual

stocklisting of components in each of the federal stock classes take

these and other factors into consideration.

In addition to identifying what fiber optic components should be

stocklisted, SM/ALC requires appropriate standardization or specification

documentation. It has been generally agreed that this documentation,necessary for the proper stocklisting and procurement of fiber optic

items, be adopted rather than newly generated. Therefore, as discussed,various industry and military standardization documents, program

statements of work and system specifications were reviewed for applicable

fiber optic specifications. Results of how these apply to the Federal

Stock Classes are included in Appendix 9. This investigation was helpful

in identifying component trends as well as the trends in what

documentation is used to support these components.

In addition to the list of component stocklist recommendations,

specification or standards documents that should be adopted in support of

these components have been identified.

.... ..... .. . ......... , . ,. .- ,* . ,- *. r .e-' -,.,. . , ,"- . . " ' ' ' ' ' --.-t '-' °"" °°rw .L''e "9 ".1"

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6010-Fi bers

Investigations to date have been unable to identify widespread uses

of bare fiber, or production programs where large amounts will be used.

Although analysis of the component data base reveals a collection of barefiber, further research has shown that these specific fibers were cabled

*. by the manufacturer prior to procurement by various Air Force agencies.- Our analysis has revealed that the same cable configuration using

slightly different fiber is used in various applications. It is more

often the case that the specific fiber used in these cables tends to vary

more than the cable itself, since engineering groups specify componentsthat meet exact requirements for their system. In any case, it is

anticipated that the majority of fiber optic system applications will

require cabled not bare fiber. Solutions for which 6010 items should be

stocklisted may best be handled by cross referencing which of the 6015 or

6020, cable and cable assemblies house the appropriate 6010 fibers.

Therefore, stockpiling large quantities of bare fiber may not be

. presently practical since the Air Force is not equipped to cable it.

However, this may be a consideration in the future when fiber designs and

manufacturing techniques have stabilized. In the interim, limited uses

of bare fiber are foreseen with research and design efforts constituting

the majority of applications. However, SM/ALC should continue to track

these activities so that potential large uses can be identified early.

Two such potential major users of bare fiber are laser gyros and missilepayout systems. The missile payout programs should particularly be

tracked because of their rapid development and widely stated need.

6010 Fiber Specifications

As previously discussed, bare fiber applications are minimal at this

time. Most current systems are specifying and using fiber cable rather

than bare fiber. The majority of those applications that are using barefiber are development programs such as the Missile Payout Program.

'S-.o-

-.. ,.

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* .' . Adopting specifications for fiber alone, therefore, is also not practical

at this time since most current applications call for cabled fiber, and,

those programs that could use bare fiber (i.e. Missile Payout) will use a

special type not readily applicable to other uses. Therefore it is

recommended that fiber specifications be covered under a 6015 cable

* -* specification for now; with plans to adopt specifications written for

special applications on an ad hoc basis. The operational and physical

properties of fiber used in cable is most often specified in those cable

documents. Industry trends for commercially available fiber indicate a

widespread use of 125um core fiber. In order to reduce proliferation of

other diameter fiber and to eliminate stocklisting and system support

problems, it is recommended that the Air Force adopt this as an interim

fiber standard.

, ..

m-'4

.1o

* * - * .., . . ..,

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I -.-. . .

6015 - Cables

Due to the varying degree of operational and environmental Air Force

fiber optic applications, it is understandable that a wide assortment of

fiber optic cables are currently being used. The introduction of fiber

optic cable to new system applications if allowed to increase

uncontrolled at its present rate, will surely result in proliferation.However, as mentioned earlier, caution must be used in narrowing the

list of currently used components while also planning to meet future

systems requirements. Review of current and potential uses of fiber

optic cable has revealed certain similarities. These similarities became

noticable after an analysis of various system performance and

specification documents.

SM/ALC's stocklist strategies should include stocklisting cables for

the present and projected tactical, fixed base and airborne applications.

Present applications are foreseen to be in tactical and fixed base

systems. Airborne applications are non existent and therefore should not

be currently considered in stocklist strategies. Several production and

development programs have or soon will specify replacements for tactical

coaxial cable technologies. The Tactical Generic Cable Replacement

(TGCR) program is specifically developing a fiber optic replacement for

the 26 pair cable currently used by the Air Force. The FOTS (LH) program

is developing a replacement for the coax cable currently used in Army and

Tri Service applications. Keeping these future requirements in mind,

SM/ALC must also support several present system applications.

The majority of most immediate applications for the Air Force are inthe ground tactical area. (AN/TPS-43, AN/GRC-206, TACS, 407L, etc.) Allthese applications have specified the use of field ruggedized cable.

Cables now or planned to be used are:

AN/GRC-206 Valtec C03-50002-02 2 fiber, 50/125, 400MHZ,lkm & 50'

Valtec C03-55018-02 2 fiber, 50/125, 400MHZ,lkm & 50'AN/TPS-43 ITT EOPD T-2501-04-1262A 4 fiber, 50/125, 200MHZ,lkm

TACS 407L

(AN/TSQ-91) ITT EOPD T-2501-04-1224 4 fiber, 50/125, 200MHZ,lkm

(AN/TSQ-61) ITT EOPD T-2501-04-1224 4 fiber, 50/125, 200MHZ,lkm

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Currently used cables in the fixed base applications are:

AN/TPN-19 ITT EOPO T-2501-02-1224 4 fiber, 50/125, 200MHZ,1&5km

AN/FAC-2A ITT EOPD T-3500-04-1202 4 fiber, 50/125, 200MHZ,lkm

T-3500-07-1201 7 fiber, 50/125, 100MHZ,lkm

T-3500-08-1201 8 fiber, 50/125, 100MHZ,lkm

Other systems and preliminary uses of cable that will soon have an

impact on stocklist strategies are:

ASOC Valtec C03-50002-02 2 fiber, 50/125, 400MHZ,1km

(AN/TSC-60)

(AN /TSQ-93)

.. TGCR Siecor 2 fiber, 50/125

rTAOC-85 ITT EOPD T-2501-04-1222C 4 fiber, 50/125, 200MHZ,2km

(MCE)

AN/MPN-XX *Cable not yet identified.

Flexible Interconnect *Cable not yet identified.

Consideration should also be given to other service and JointService Ground Tactical programs that may have an impact on the cables

the Air Force chooses to stocklist. Some of these programs are:

FOTS(LH) ITT EOPD 2 fiber, 1km

GLCM SIECOR 6578T1001 6 fiber, 100/140, 20MHZ, 300m

AN/TVC-39 ITT EOPD T-2501-06-1221 6 fiber, 50/125, 100MHZ

TRI TAC

L DFOCS

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Prior to reaching a decision on which of the above cables should be

stocklisted, the terminations and applications should be considered.

Part of this consideration is the present level of skill required to mate

a connector to a fiber cable in the field. Although the expertise

required to perform this function has decreased, it has not yet reached

the level where it can be performed by field personnel. The equipment

necessary to expect general levels ot acceptable connector cable mating

in the field will be available in acceptable size (portable) and price in

about two years. Until this time it is recommended that the Air Force

stocklist the appropriate cables; however, only minimal amounts of

unconnectorized cable should be stockpiled.

In support of this recommendation, all of the sample programs listed

above have specified these cables be preconnected assemblies. Therefore,

field ready spares should be preconnected. The specific assemblies will

be addressed in the 6020 section of recommendations, although cable to

support a number of programs may be purchased unconnected with the

purpose of depot level connector installation. Therefore, it is

recommended that a combination of cable and cable assemblies be

stocklisted with the strategy that the Air Force develop the expertise of

cable termination.

The specific volumes of fiber optic cable that should be stockpiled

are difficult to pinpoint at this time due to a lack of system planning

* data. It is, however, recommended that the types of cable selected for

.- stocklisting closely match those specified by current production systems

(i.e., AN/GRC-206, AN/TPS-43). It is also suggested that these types of

cables be purchased in varying configurations (i.e., 2, 4, 6, 8 fibers)

so that a number of planned systems can be supported.

'

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0I

6015 Cable Specifications

Adopting a fiber optic cable specification that would meet all cable

requirements of Air Force applications is not recommended. This is due

to the many current systems that fiber optics currently applies. In

addition to the many operational variations, environmental considerations

of where these cables are used must also play a part in the final

- . selection of the specified cable. Cables that are used in airborne

- applications may not be practical in a ground tactical system and vice

versa. It is because of these operational and environmental differences

that it is recommended that SM/ALC adopt a specification for each

application category.

As an example, three major application areas have been identified:

Ground Tactical, Airborne and Fixed Base Communication Systems. Within

these environmental areas there exists several levels of desired

operational performance. Initial recommendations are that an overall

application category specification be adopted and used in combination

with the systems specific operational criteria until more formal

specifications are developed. An additional consideration is the issue

of terminated vs unterminated cable. As discussed earlier, SM/ALC must

concern itself with this issue for stocklisting efforts, it is

recommended that this also be considered when selecting specification

documents.

The specifications for cables themselves will vary slightly from

those of cable assemblies. The specifications chosen for cables will

concern themselves with the cable itself and not with the method of

packaging, termination and lengths. Both current and in process cable

specifications deal with general cable characteristics. The more

specific operational charteristics are included in the individual system

specifications.

4.-

. .- .

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'0"

Therefore, it is we recommended that SM/ALC adopt the following general

specifications until the completion of more formal documents:

DOD-C-85045 Military Specification Cables; Fiber Optic

General Specification for Metric

DOD-C-85045/1 Military Specification Cables; Fiber Optics,

Single Fiber

DOD-C-85045/2 Military Specification Cables; Fiber Optics,

Heavy Duty

Mil-Std-1678 Military Standard Fiber Optics Test Methods

and Instrumentation

The majority of fiber optic cable applications can utilize these

. documents to form a basis for future specifications. Further detail is

- needed since the most current systems (AN/GRC-206, AN/TPS-43, TACS 407L,

AN/TPN-19, AN/FAC-2A, etc.), and those that are anticipated (TAOC-85,

- . TGCR, etc.), all specify very similar cable. (See Appendix 9.) Because

the TGCR Program is expected to have multiple applications, and meets

operation criteria of the other programs, it is recommended that cable

specifications developed from this program be adopted for SM/ALC's

activities. It is also recommended that SM/ALC continue to review the

progress of this program to insure that the results meet the needs of

" SM/ALC prior to the document's global adoption. Also, SM/ALC can prepare

for any modifications that may be required. The majority of systems will

be able to immediately use the TGCR cable specified even though in some

cases the cable will be much better than was originally required.

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1 . i

A.

6020 Cable Assemblies

As discussed in the 6015 recommendations, there are a wide number of

applications for cable assemblies. The majority of systems that are in

production or are currently installed specify the use of fiber optic

cable assemblies rather than unterminated cable. Moreover, most of the

system development programs also specify the use of preconnected

assemblies. This is surprising since a review of the component

performance tables does not indicate a significantly large number of

cable assemblies. Investigations of component information sources (i.e.,

system specifications, statements of work, interviews) reveal that cables

and connectors have been separated so that each can be specified to

precise criteria. No effort, until now, has been made to identify these

as an assembly.

As explained in the 6015 recommendation section, the reason that

most of these systems specify cable assemblies rather than unterminated

cable, is the level of expertise currently required to mate a connector

to a fiber and maintain an acceptable loss factor in a field

installation. Decisions regarding stocklisting of particular cable

assemblies should be made with an eye toward future system applications

and the efforts of some development programs. Cable assemblies, unlike

cables themselves, will not have as wide an application base because of

the different required terminations. Therefore, a large volume of

assemblies not dedicated to specific system applications should not be

immediately stockpiled. Recommended stocklisting and stockpiling

strategies in this regard however are structured toward supporting the

common applications, as well as specific program needs. Support for

systems with an immediate need include cable assemblies for the

AN/GRC-206, AN/TPS-43, TACS 407L, AN/TPN-19, AN/FAC-2A Air Force systems.

(Although AN/FAC is a Navy system, it has Air Force applications.) The

cables used in these assemblies were identified in the 6015 section. The

connectors used for each are:

AN/GRC-206 Hughes, 2 contact, hermaphroditic

AN/TPS-43 Hughes, 4 contact, hermaphroditic

• " ;"" " "' '" ' A" 'T"S-4 Hughes, 4"""--_" conact hermaphroditic " "-'""i ' -° "

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AN/TSQ-91 Hughes, 4 contact, Hermaphroditic

(TACS 407L)

AN/TSQ-61 Hughes, 4 contact, Hermaphroditic

(TACS 407L)

AN/TPN-19 Amphenol, SMA

AN/FAC-2A ITT Supplied

Therefore combining the cables identified in 6015 with these

terminations, immediate 6020 stocklist recommendations are:

1) CABLE Valtec C03-50002-02 2 fiber, 50/125, 400MHZ, 1km

CONNECTOR Hughes 2 contact, Hermaphroditic

2) CABLE ITT EOPD T-2501-04-1262A 4 fiber, 50/125, 200MHZ, 1km

CONNECTOR Hughes 4 contact, Hermaphroditic

3) CABLE ITT EOPD T-2501-04-1224 4 fiber, 50/125, 200MHZ, 1km

CONNECTOR Hughes 4 contact, Hermaphroditic

4) CABLE ITT EOPD T-2501-02-1224 4 fiber, 50/125, 200MHZ, 1&5km

CONNECTOR Hughes 4 contact, Hermaphroditic

5) ITT CABLE ASSEMBLY

CABLE ITT EOPD T-3500-04-1202 4 fiber, 50/125, 200MHZ, 1km

T-3500-07-1201 7 fiber, 50/125, 100MHZ, 1km

T-3500-08-1201 8 fiber, 50/125, 1OOMHZ, 1km

CONNECTOR ITT Supplied

However, as with Cable (6015), development programs will have to be

. ,

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0-6. -.

tracked so that SM/ALC can anticipate a requirement to stocklist

additional cable assemblies. Analysis of these programs has also

revealed the specification of cable assemblies in the following programs:

ASOC CABLE Valtec C03-50002-02 2 fiber, 50/125, 400MHZ, Ikm

(AN/TSC-60)CONNECTOR Hughes 2 contact, Hermaphroditic

(AN/TSFQ-9O

TGCR CABLE Siecor 2 fiber, 50/125

CONNECTOR Hughes 2 contact, Hermaphroditic

FOTS(LH) CABLE ITT EOPD 2 fiber, 1km

CONNECTOR Hughes 2 contact, Hermaphroditic

AN/TYC-39 CABLE ITT EOPD T-2501-06-1221 6 fiber, 50/125, 100 MHZ

CONNECTOR Hughes Hermaphroditic

GLCM CABLE Siecor 6578T1001 6 fiber, 100/140, 20MHZ, 300m

CONNECTOR Amphenol

TAOC-85 CABLE ITT EOPD T-2501-04-1222C 4 fiber, 50/125, 200MHZ, 2km

CONNECTOR Hughes 4 contact Hermaphroditic

*" AN/MPN-XX

.

...........................

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"-". 6020 CABLE ASSEMBLY SPECIFICATIONS

Cable assemblies in essence are finished products, comprised of

items of other Federal Stock Classes. Each of these individual items

thould, of course, meet their own established specifications prior to

being considered for the finished assembly. However, fiber optic system

development efforts until recently were more system specific. Systems

have been developed to meet the needs of a certain application with no

effort made to reference similar prior applications for the cable

assembly construction. Most of the systems reviewed to date acknowledge

the use of preconnected cable assemblies rather than unterminated cable.

As discussed, most of the immediate applications for fiber optic

cable assemblies are in the ground tactical area. The purpose of the

TGCR program is to replace the Air Force's current 26 pair coaxial cable

systems and, as recommended in the 6015 section, future ground tactical

applications of fiber optic cable should utilize the specifications

developed by this program. It is recommended that SM/ALC track the

progress of this program and be prepared to adopt the specifications that

result. Preliminary specifications have been developed by the contractor

(GTE Communications Products Corporation).

Additional specifications that should be adopted and reviewed

by SM/ALC are:

Cable/Harness Assembly Specification - Prepared by: DESC

Contact: Dick Shade

Fiber Optic Transmission [FOTS(LH)] CR-CS-0051-001

Prepared by: Army Tactical Communications Systems

(ATACS) Contact: Alex Mondrick

Airborne systems using fiber optic components have been minimal.

However, this may have been due to the lack of acceptable standards. In

light of the soon to be completed Mil-Std-1773, Avionics Fiber Optic

Databus, it is recommended that SM/ALC adopt this document for avionics

cable assembly applications.

-7

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* .6030 -Light Sources, Light Detectors

Fiber optic sources and detectors very much like fiber cable havebeen specified exactly to the performance characteristics of particularsystems. The optical portion of communication links have been designedto meet the needs of individual systems. The individual devices used areoften then integrated into larger subassembly, transmitter and receiverdevices. Such is the case with light sources and detectors.

A trend is that most systems employ the use of transmitter andreceiver packages that contain the respective light sources and detectorsrather than the devices themselves. Fiber optic transmission systems are

x : ~currently used as replacements for coaxial and microwave systems. Theoptical transmitters and receivers have, therefore, been kept to aminimal level of complexity and size. This is due to the modular natureof most applications. However, specifications detail which particularlight source and detector should be used in the respective transmitterand receiver packages. It is recommended that the Air Force decide onwhich specifications will be used for these devices so that they can bestocklisted; but these should not be stockpiled at this time. The

**stockpiling of items, if at all, should be concentrated in thetransmitter and receiver area.

The current uses of the individual devices are mainly in support ofresearch and design efforts. Therefore, as with cable/cable assemblies,an introduction strategy should be formed. As SM/ALC becomes more

familiar with fiber optic technology and the rate of new productintroduction slows, the Air Force may wish to consider stockpiling lightsource and detector devices. This familiarity with fiber optics mayencourage depot repair and replacement of such devices. However, it isnot recommended that SMIALC initiatq this effort immediately because of

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7- 77 7

-. 7the current level of expertise necessary. Developments are expected that

* would increase the modularity of these devices, making simple plug in

replacement LED and Laser packages. Moreover, the technological thrust

* of the Air Force in fiber optics is expected to continue; therefore, it

- - is also recommended that the continued use and development of the devicesbe monitored. And, as these developments are completed, SM/ALC should

reevaluate the stocklist and stockpiling situation for these devices.

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6030 LIGHT SOURCE, LIGHT DETECTORS SPECIFICATIONS

Even though it is recommended that the Air Force not stockpile these

devices, the review and adoption of acceptable specifications should

proceed. Recognizing this need, DESC is proceeding with developing

general specifications for sources and detectors. However, the bulk of

source and detector specification work is being done through the

transmitter and receiver development efforts as described earlier. It is

is recommended that SM/ALC adopt the documents now being developed by

DESC and closely monitor the progress of programs where common use

transmitter/receiver devices are being developed. As these programs

mature, SM/ALC should adopt or modify the source and detector documents

because of the potential large effect these would have on SM/ALC's

stocklisting efforts. Some of the programs SM/ALC should monitor are:

TGCR Current GTE Specs Available

FOTS(LH) CR-CS-0051-001

MFOX Preliminary Report Available

RADC

4*-]

6]

61

6"

* .~ .. I

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6030 - Transmitters, Receivers

Due to the complexity of working with light sources and detectorsthat has been described, it is recommended that the Air Force begin

stocklisting transmitter and receiver modules that apply to various

systems. A major trend taking place in the Air Force is the replacement

of tactical cable transmission systems. Several development programs

already have or will soon identify transmitter and receiver modules that

. meet these requirements. These development programs are aimed at solving

* the need of many ground based tactical applications. The thrust of those

systems that are installed are aimed more at addressing specific programneeds. Immediate stocklist strategies should therefore be directed

toward meeting the needs of current applications as well as planning to

support future system applications. Recognizing that the application

base of these more specific current transmitter and receiver devices islimited, SM/ALC should closely monitor the activites of several

development programs since the potential of engineering overlap is quitelikely.

Taking the existing USAF programs into consideration, it is

recommended that the United States Air Force stocklist and stockpile

transmitter and receiver packages to support the needs of installed or in

production systems. Therefore, recommendations for stocklisting include:

AN/GRC-206 (Transmitter) Spectronics 812099-801

(Receiver) Spectronics

AN/TPS-43E (Digital Honeywell Optoelectronics HFM 2010-224

Transmitter)

(Digital Honeywell Optoelectronics HFM 4002-223

Transmitter)

0_

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(Digital Honeywell Optoelectronics HFM 1510-222

Receiver)

(Digital Honeywell Optoelectronics HFM 3502-222

Receiver)

AN/TPN-19 (Transmitter) ITT EOPD T6011

(Transmitter) Honeywell Optoelectronics SPX-4140

(Receiver) ITT EOPD T6086

(Receiver) Honeywell Optoelectronics SPX-4141

AN/FAC-2A (Transmitter) ITT EOPD T-601C

(Receiver) ITT EOPD T-6078

Fiber optic transmitters/receivers that should also be stocklisted

are the product results of the fiber optic Analog and Digital modem

programs. These devices are anticipated to address common problems in a

number of applications. The contractor for these is Codenoll Technology.

It is also recommended that SM/ALC follow the various development

programs that may have an impact on their stocklist and stockpiling

strategies. Several Air Force programs now in development are structured

to provide a common solution to many specific system needs and

requirements. Fiber optic transmitters and receivers being developed in

these programs, when available, should be stocklisted by SM/ALC. Some of

these development systems that should be tracked are:

Tactical Generic Cable Replacement (TGCR)

FOTS (LH)

TR I-TAC

AN/TYC-39

MFOX

-* "1-- 1'

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The MFOX (Multi Purpose Transceiver) Program should be given special

attention because of the number of potential system applications on whichit will have impact.

6030 TRANSMITTERS AND RECEIVERS SPECIFICATIONS

As described in the transmitter and receiver component

recommendations, current uses of transceivers are very system specific.Adopting one component to be used in all applications at this time is not

recommended. However, the replacement of cable technologies throughprograms such as the TGCR, will play a role in potentially introducing

common components and specifications to a number of programs. Current

system applications unfortunately may have to continue being supported by* .their individual program specifications. However, future applications

should adhere to the specifications being developed under the following

.- ;."

programs:

MFOX

FOTS(LH)

TGCR

TRI-TAC

DIGITAL F.0. MODEMS

ANALOG F.O. MODEMS

These programs promise to have the most impact on SM/ALC's

transceiver stocklisting efforts and therefore specifications documents

should be adopted for other similar programs. Recommendations for the

documents that SMALC should review for possible adoption are:

reomne. Hoeeterelcmn f al eholge hog

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EQUIPMENT PERFORMANCE SPECIFICATIONS FOR DIGITAL F.O. MODEMS

Number: EPS-82-0016

Organization: 1842 EEG/EEICS

Scott AFB, Illinois 62225

Individual: Ken BeckerPhone: 618-256-4591

1!:' EQUIPMENT PERFORMANCE SPECIFICATIONS FOR ANALOG F.O. MODEMSNumber: EPS-82-016B

- - Organization: 1842 EEG/EEICS

Scott AFB, Illinois 62225Individual: Ken Becker

Phone: 618-256-4591

EQUIPMENT PERFORMANCE SPEC FOR TI MULTIPLEXER TERMINAL EQUIPMENT (draft)Number: EPS-82-006

Organization: 1842 EEG/EEICS

Scott AFB, Illinois 62225Individual: Ken BeckerPhone: 618-256-4591

EQUIPMENT PERFORMANCE SPEC FOR T3 MULTIPLEXER TERMINAL EQUIPMENT (draft)

Number: EPS-83-006

Organization: 1842 EEG/EEICS

Scott AFB, Illinois 62225Individual: Ken Becker

EQUIPMENT PERFORMANCE SPEC FOR T1 CARRIER SPAN LINE EQUIPMENT (draft)

Number: EPS-82-OO&

Organization: 1842 EEG/EEICS

Scott AFB, Illinois 62225Individual: Ken Becker

,..;.. ..

", .1

-- ' aI. 'W 'O , " ", % " ", ", " '" "0 ", " . . . "" .- " . ," ." ," .""." .. . " . , . " " . .

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-- FIBER OPTIC TRANSCEIVER SPEC.

Number:

Organization: RADC

Individual: Frank Chiffy

SPECIFICATIONS FOR REPEATER DEVICES

Number:

Organization: Air Force 85; WP AFBRADC

Individual: Dick Shade

DESC-EMD

Dayton, Ohio 45444

• '

• ,.

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6060- Interconnectors

Interconnection devices used by the USAF vary from simple splices to

multipin connectors. The data collection and analysis have identified

the Hughes multipin connector as the most widely used and therefore it

should be stocklisted by the USAF. In addition to being the most popular

connector currently used, the Hughes connector has been identified by

DESC as a standard for multipin applications. Although other

applications of multipin connectors are being tested, it is recommended

that the USAF consider stockpiling the Hughes connector in sufficient

quantities to meet the forecasted demand of current and planned system

applications. Current system applications have been identified for use

in the AN/TPS-43, AN/GRC 206, TACS 407L and other systems. Other

connectors that are also specified for use in Air Force fiber optic

systems are the ITT Cannon multipin connector, the Amphenol 905 and 906

series connectors. The Air Force should also stocklist and stockpile

several quantities of the ITT Cannon multipin connector because of the

number of systems now using it and for evaluation and comparison

purposes. However, it may be in the best interest of the Air Force to

stocklist both connectors to insure their availability. The Amphenol

connectors are widely used for single fiber applications and also have a

specification currently being written for it by DESC. Similarly, because

of its widespread use, the Amphenol connector should be considered for

stocklisting by the USAF. The list below depicts the connectors

recommended to be stocklisted by the USAF at the present time. However,

because of the logistics issues of cable/cable assemblies discusseJ in

the 6015, 6020 section, SM/ALC may wish to consider stocklisting only

those connectors that would be used as spares in support of systems. As

with cable/cable assemblies, a combination of connectors and assemblies

is suggested.

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%7 . -.

RECOMMENDATIONS FOR STOCKLISTING:

Hughes multipin Hermaphroditic (2, 4, 6, 8 contacts)

ITT Cannon multipin (2, 4, 6, 8 contacts)

Amphenol 906 Series (Single contact)

905 Series (Single contact)

The following list of systems have immediate applications and hence

the respective connectors should be stocklisted and stockpiled in

quantities:

AN/GRC-206 Hughes 2 Contact Hermaphroditic

AN/TPS-43E Hughes 4 Contact Hermaphroditic

TACS 407L

(AN/TSQ-91) Hughes 4 Contact Hermaphroditic

(AN/TSQ-61) Hughes 4 Contact Hermaphroditic

AN/TPN-19 Amphenol SMA906

The following development programs, whose activities should be

tracked, currently specify these connectors:

FOTS(LH) Hughes Hermaphroditic

TRI-TAC Hughes Hermaphroditic

ASOC Hughes Hermaphroditic

TGCR Hughes Hermaphroditic

. AN/TYC-39 Hughes Hermaphroditic

TAOC-85 (MCE) Hughes Hermaphroditic

GLCM Amphenol

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6060 CONNECTOR SPECIFICATIONS

As shown, a number of interconnector devices are currently used by

the USAF. The stocklist recommendations specify the Hughes,

Hermaphroditic, ITT Cannon multipin and Amphenol 905 and 906 series

connectors as preferred choices for stocklisting. Connectors have not

experienced the wide variation problem that has confronted the cable,

cable assembly and transceiver component groups. Thus, a significant

amount of study has been done in the specification area for

interconnection devices. Several military and DOD specs have been or are

in process of being completed. Some of these documents are preliminary

in nature; however, SM/ALC may wish to adopt these upon their approval.

Documents that should be adopted are:

Mil-C-85044 Military Spec Connectors (Fiber Optic)

Prepared by: Naval Air Engineering Center

RS-440 Fiber Optic Conector Terminology

Prepared by: EIA

Draft Only Specifications for a Bulkhead Penetrator

Final Issue 1/84 Prepared by: Defense Electronics Supply Center

Draft Only Specifications for a Hull Penetration Device

Final Issue 1/84 Prepared by: Defense Electronics Supply Center

Draft Only Specification for SMA Style Fiber Optic Connectors

Final Issue 1/85 Prepared by: Defense Electronics Supply Center

Draft Only Specification for Hughes Multichannel Connectors

Final Issue 1/85 Prepared by: Defense Electronics Supply Center

V..j

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6060 -Couplers

* During the information gathering stage and the follow up research,no major uses of fiber optic couplers were identified. This is obviously

due to the instability and cost of these items during their developmentcycle. Until recently these items were very expensive and not readily

used because of non standard operating characteristics. However, due torecent developments, these devices have decreased in cost and increased

in operationality. Moreover, several military research and development* programs have been initiated to study potential system applications of

passive and active couplers. These programs are not expected to have animpact on the stocklist for some time, hence the recommendation is to not

stocklist these devices now. Also recommended is to track these

development efforts to keep abreast of developing funds in this area

because of the large potential of these devices in a number of currentand planned Air Force systems.

6060 COUPLER SPECIFICATIONS

Since there is no system with widespread coupler use, no specific

thrust has been made in developing a specification for these devices.Therefore, adopting or developing a specification for coupler components

may be premature at this point. The progress of research and development

groups in the coupler area should be tracked, however, for component

progress and emerging specifications. Also, the efforts of the DESC

fiber optic group should be periodically reviewed for their progress in

coupler specifications.

9J

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STOCKLIST AND STANDARDIZATION RELATED RECOMMENDATIONS

Fiber optic transmission systems are made up of many components.

The linking together of these components (connecting cable, splicing

fiber cable and pigtails), is decreasing in complexity. However, it has

still not reached the level where these functions can be readily

performed in the field. Therefore, stocklist strategies must be

* developed around the types of field installation that can be effectively

* accomplished. Also, the location and level of repair of these items must"- be identified by SM/ALC since the Air Force is beginning to use more

fiber optic components. Our recommendation is that SM/ALC develop a

certain maintainence expertise in fiber optics. This expertise should be

in direct support of fiber optic stockpiled components and assemblies.

Some systems reviewed were recognized as using discontinued fiber

optic devices. So that the SM/ALC can continue to support these

applications with minimal effort, without proliferating the stocklist

with many similar components, a list of currently available commercial

fiber optic components was created. This list was described earlier and

has been presented to SM/ALC in a machine readable format. To stop the

.T proliferation of items, this list or a similar one, should be used by- SM/ALC whenever possible for procurement purposes in support of systems

.. .using discontinued components. Upon the identification of an adequate

replacement, this device should be stocklisted and stockpiled in the

appropriate quantities.

% * A * * ~. ~ * - -.. - - . ' . . - * *

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Additional Recommendations

In addition to the recommendations made under each of the stock

classifications, the following additional recommendations are made to provide

the Air Force with Planning guidance.

1. With the fiber optics technology still three to four years away

from stabilizing, it is recommended that additional contract efforts be

planned to:

(a) Collect and refine data on systems applications.

(b) Collect and refine data on Research and Development

activities.

(c) Collect and refine data on commercially available components

that meet military specifications or are used in military

systems.

(d) Collect and categorize reports on fiber optics component

tests and evaluation.

(e) Continue to update contact lists.

2. SM/ALC should develop a capability to test commercially available

products, and develop lists of qualified suppliers by product.

- 3. SM/ALC should develop with its contractor a set of decision rules

for determining what and how many fiber optics components to stocklist.

4. SM/ALC should develop a Directory for Fiber Optics systems that

can be used for promoting the use of fiber optics and educating system program

officers.

5. SM/ALC should investigate ways that data from industry IRAD

- programs can be entered into the data base.

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I X

6. SM/ALC should investigate the establishment of a Federal Stock

Classification for fiber optics test equipment and splicing equipment and

accessories.

7. SM/ALC should fund the development of test and measurement

techniques for use both at the depot level and for use in the field.

8. SM/ALC should initiate a program to train its engineers on fiber

optics design, and techniques on connecting, splicing, and test and

measurement techniques.

9. SM/ALC should attempt to set up a system whereby industry IRAD

fiber optics programs can be included in the R & D data base. This is due to

the importance of industry IRAD programs.

I.

2' - 0

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FUTURE WORK

Specific work activity that should be pursued by the Air Force issummi~arized here: *

a. Continue data collections to update the existing data base.This should be continued for another three to four years until

the technology matures.

b. Develop, under a separate contract, a systems directory forfiber optics which would include a system description, crossreference to other systems and acronyms, how fiber optics isused, pictorial diagrams, block diagrams, technical parameters,economics, advantages, etc.

c. A model should be developed for microcomputer systems thatsystems designers or analysts can use to determine the

effectiveness of using fiber optics, and assist in specifyingfiber optics.

d. Develop an in house consultant group that can assist

program managers in the design and specification of fiberoptics systems and also "how to" access the data base.

e. Because of the complexity of acquiring data on IndustryMRAD programs, a separate program should be initiated to obtainthis data on a non disclosure basis for use in the ALC database.

f. Develop a manual of test and maintenance techniques thatcan be used at various levels.

.4g. Develop training programs aimed at various levels of

technical and management personnel. These programs should beinitiated as soon as possible.

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SUMMARY AND CONCLUSIONS

Technology

1. Fiber optic technology is advancing so rapidly that is is difficult tostandardize on any one component, group of components and corresponding

* specifications at this time.

2. A developing trend for fiber optic components is that prices are droppingand components capabilities are increasing. A component selected for use in

existing systems today will have a greater technical performance at a cheaperprice tomorrow. This does not say that it is impossible to stock fiber opticitems; however, it does say that specifications must be written to assumethese increased performances.

3. Due to the facts discussed in #2 above, minimal quantities of items shouldbe inventoried at this time.

4. With the rapid changes in technology, commercial product part numbers areconstantly changing. A tracking system is needed that can trace productsthroughout their development cycle in order to support older fiber opticsystems already in the field.

Data Collection

The collection of data on fiber optics applications in the Air Force is adifficult and time consuming task. For a number of reasons, this task wasunderestimated in the past study phase. The data is available but is

dispersed and often is buried in a larger system context. Some of theproblems encountered in collecting data include:

a. Lack of any single depository of information.

@'he

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b. Lack of an unpdated data base of contacts, phone numbers,addresses, etc., of persons or organizations responsible for

fiber optics implementation.

c. Delay in locating the right person.

d . Multiple contacts required.

e. Lack of priority to provide the information.

f. Need to know.

g. Proprietary data.

h. Delays in shipment of materials requested.

i. Identifying the types and form of information available and

needed.

j. Lack of suitable system description which contains a block

diagram indicating where the fiber optic components are used.

k. Confusion over names, acronyms, and other designations of

systems and subsystems.

1. Bureaucracies in both government and industry.

As a result of these problems in collecting information and data, amechanism is needed for continuously reviewing existing data, collecting newdata, etc., either i n the Air Force or by contract. Based on our

understanding of the limitations placed on government organizations withregards to travel and communications, this task is perhaps better performed byan outside contractor.

The data collected to date has also allowed us to focus our questions forfurther information.

Systems

1. There is a lack of readily accessible data on number of systems that mayenter the Air Force inventory requiring logistics support. The location ofthis data was very unclear and was not made available.

d

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*.2. Due to the increasing familiarity and understanding of fiber optic

* technology, systems managers, integrators and designers, are considering fiber- .optics in more systems because of its advantageous properties. In this study

alone, over 170 systems throughout the DOD were identified and this number isgrowing rapidly. Many of these applications are singular or experimental in

* .nature. It is expected that only about ten percent will actually enter the

inventory.

Logistics and Support

1. It is difficult to ascertain the criteria that the Air Force presentlyuses for stockpiling components. That is, if "x" number of systems are

planned which use "Yn' fiber optics components, where n is the number of fiberoptic components (i.e., source, detectors, cables, etc.), then what number

will go into service, inventory, how many spares will be required and over-what time period? These decision criteria cannot be made by a contractor and

must be made jointly based on the data collected by the contractor.

2. SM/ALC must move quickly to head off the proliferation of non standardcomponents that are now entering the inventory. A set of qualified productsand suppliers would be a major first step in stopping this proliferation.

Education

Considerable education of systems program managers is needed to get themto utilize fiber optics at the earliest convenient date. Many are still

unfamiliar with the technology and feel it is still too new, unreliable, and*hence too much of a risk. This is a prevalent perception of those not

intimately familiar with the fiber optics business.

e A well developed data base can help in marketing fiber optics to programmanagers. In particular, the following could be useful:

a. Series of success stories.

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b. Readily available test data.

c. Systems descriptions showing how fiber optics has been used.

d. Data base that can be accessed by program offices to determine

* availability of military qualified components, manufacturers, and

documentation that can be used to specify or procure such components.

e. In house consultant to advise end users on technical details and

access to the data base.

The data included in the data base can be analyzed and presented in anumber of different ways. It is essential that the Air Force determine the

most useful ways to collect and present this data. In this report, a numberof different formats have been used.

Research and Development

1. Data is readily available on research and development activities. Many of

the programs are overlapping either whole or in part. Much of the data for

SM/ALC's Research and Design and Systems Needs data bases can be obtained from

those studies. For example, the MFOX program has two contractors competingfor the manufacture of one program. Both contractors have surveyed a number

of systems users, collected and analyzed the results. SM/ALC can benefit fromi

their efforts as well as provide aid to the contractors involved in these

programs. The data collection can be used to update, validate and completeSM/ALC's Systems Needs data base. With a readily available data base onsystems needs, many of the research surveys made by contractors can beeliminated.

2. A large amount of data is available on industry Independent Research and

Development Programs (IRAD). Unfortunately, this data is only available tomilitary organizations and hence was not available to this contractor.

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Test Equipment

There does not exist a category in the Federal Stock classification forfiber optics test equipment. Such a classification should be developed.MIL-STD-1678 and various EIA standards presently encompass the thrust ofstandard test and measurement techniques available. SM/ALC should seek fundsto develop a fiber optic test and measurement technique manual using theMIL-STD-1678 and the EIA efforts as a basis. From this, various levels oftest and maintenance can be determined.

Accessories

No Federal Stock classification exists for fiber optic splices and"- accessories suci, 3s cleavers, tools, and splice enclosures.

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